This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


Re: [Xen-devel] cpufreq status information

To: "Tian, Kevin" <kevin.tian@xxxxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>
Subject: Re: [Xen-devel] cpufreq status information
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Mon, 08 Sep 2008 16:04:13 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
Delivery-date: Mon, 08 Sep 2008 08:04:39 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <D470B4E54465E3469E2ABBC5AFAC390F024D9768@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
Thread-index: AckRwCDkX6AT3H2zEd2nVwAX8io7RQAAW87wAACl1iM=
Thread-topic: [Xen-devel] cpufreq status information
User-agent: Microsoft-Entourage/
On 8/9/08 15:49, "Tian, Kevin" <kevin.tian@xxxxxxxxx> wrote:

>> The advantage of the latter is that the frequency changes are
>> interleaved
>> with other stuff you care about, like what's being scheduled,
>> what's on run
>> queues etc. Since obviously frequency information all by
>> itself is not so
>> interesting.
> Yes, we already have many examples within dom0 to retrieve xen
> specific information bypassing dom0. By the way, we have the plan
> to add xentrace events for all processor PM stuff, including freq
> change and also cpu idle states transition (like break causes, etc.)

It's good to know there are other users and developers of xentrace!

 -- Keir

Xen-devel mailing list